Points on ellipse not accurate if I zoom in close enough
Suppose I create an ellipse for example via (2*cos(t),sin(t)) and then create a point on it, say P = (2*cos(20),sin(20)), at first sight everything seems to be ok, but if I zoom in close enough to the point P, it doesn't lie on the ellipse anymore.
The same problem occurs if you for example if you construct an intersection of a ray with the ellipse and zoom in to the intersection point.
Is this a bug or can this be fixed by changing the internal precision of geogebra? If so, how can I change the internal precision?